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Improved Iterative Joint Detection and Decoding of Coded V-BLAST Systems

IEEE COMMUNICATIONS LETTERS 2009年第1期13卷 19-21页

作者： Tsai, Meng-Ying (Brady) Yousefi, Shahramn Queens Univ SDAL Kingston ON K7L 3N6 Canada Queens Univ Dept Elect & Comp Engn Kingston ON K7L 3N6 Canada

soft iterative detection and decoding techniques have been shown to achieve near-capacity performance in multiple antenna systems. In most cases, obtaining optimal soft information in a joint detection and decoding algorithm by marginalizing over the entire observation space is prohibitively complex. In this paper, an improved scheme adaptable to various list-type detectors providing superior performance is proposed.

关键词： soft-in/soft-out detectors sphere decoder iterative decoding joint detection and decoding

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A New Iterative Joint Detection and Decoding Algorithm for V-BLAST Architecture

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IEEE SIGNAL PROCESSING LETTERS 2009年第10期16卷 905-908页

作者： Tsai, Meng-Ying (Brady) Yousefi, Shahram Queens Univ SDAL Dept Elect & Comp Engn Kingston ON K7M 5W9 Canada

soft iterative detection and decoding techniques have been shown to be able to achieve near-capacity performance in multiple-antenna systems. To obtain the optimal soft information by marginalizing over the entire observation space is intractable: one must resort to suboptimal methods to implement such receivers. Although list-type detectors such as those founded upon the sphere decoding algorithm provide outstanding error performance, issues such as the optimal initial sphere radius, optimal radius update strategy, and their highly variable computational complexity are still unresolved. In this paper, a new detection scheme is proposed addressing the above issues. Our simulation results show that by sacrificing less than 2 dB at error rate of 10(-5), we are able to gain up to 38.6% complexity reduction as well as a detector structure that is more suitable for practical system implementation.

关键词： Iterative decoding joint detection and decoding soft-in/soft-out detectors sphere decoder

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Dynamic-list joint detection and decoding of LDPC-coded V-BLAST systems

Dynamic-list joint detection and decoding of LDPC-coded V-BL...

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Canadian Conference on Electrical and Computer Engineering

作者： Tsai, Meng-Ying (Brady) Yousefi, Shahram Queens Univ SDAL Dept Elec & Comp Eng Kingston ON K7L 3N6 Canada

ISBN: (纸本)9781424416424

soft iterative detection and decoding techniques have been shown to be able to achieve near-capacity performance in multiple antenna systems. To obtain the optimal soft information by marginalizing over the entire observation space is intractable;and it is not clear what the best way to obtain the suboptimal soft information is. In this talk, an improved scheme is proposed which can be adapted to various list-type detectors and provide superior performance.

关键词： Bell Labs Layered Space-Time (BLAST) low-density parity check (LDPC) codes soft-in/soft-out detectors sphere decoder iterative decoding joint detection and decoding

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Fixed-complexity list-type iterative joint detection and decoding of LDPC-coded V-blast systems

Fixed-complexity list-type iterative joint detection and dec...

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24th Biennial Symposium on Communications

作者： Tsai, Meng-Ying (Brady) Yousefi, Shahram Queens Univ Dept Elect & Comp Engn Signal Design & Anal Lab Kingston ON Canada

ISBN: (纸本)9781424419456

soft iterative detection and decoding techniques have been shown to be able to achieve near-capacity performance in multiple antenna systems. To obtain the optimal soft information by marginalizing over the entire observation space Is intractable: one must resort to suboptimal methods to implement such receivers. Although list-type detectors such as those founded upon the sphere decoding algorithm provide outstanding error performance, issues such as the optimal initial sphere radius, optimal radius update strategy, and their highly variable computational complexity are still unresolved. In this paper, a new detection scheme is proposed addressing the above issues. Our simulation results show that by sacrificing less than 2dB at error rate of 10(-5), we are able to gain up to 38.6% complexity reduction as well as a detector structure that is more suitable for practical system implementation.

关键词： Bell Labs Layered Space-Time (BLAST) low-density parity check (LDPC) codes soft-in/soft-out detectors sphere decoder iterative joint detection and decoding

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